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Start may not be called on a promise-style task. exception is coming

... calling its constructor, and you shouldn't even do that unless you have a compelling reason to not start the task when you create it; if you want it started right away you should use Task.Run or Task.Factory.StartNew to both create and start a new Task. So, now we know to just get rid of that pesk...
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MongoDB, remove object from array

...ulti. For current syntax & documentation check this link: docs.mongodb.com/manual/reference/method/db.collection.update – Lukas Liesis Apr 16 '18 at 13:03 ...
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httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for Se

...n name part. For example, the following is a valid FQDN: host.server4-245.com Choose an FQDN and include it both in your /etc/hosts file on both the IPv4 and IPv6 addresses you are using (in your case, localhost or 127.0.0.1), and change your ServerName in your httpd configuration to match. /etc...
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Convert a list of objects to an array of one of the object's properties

... add a comment  |  19 ...
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Should I git ignore xcodeproject/project.pbxproj file?

...xcodeproject/project.pbxproj file changed, but useless info for me, it for compile. 7 Answers ...
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How are people managing authentication in Go? [closed]

...ovided by a member of the golang-nuts mailing list: https://groups.google.com/forum/#!msg/golang-nuts/GE7a_5C5kbA/fdSnH41pOPYJ This provides a suggested schema and server-side implementation as a basis for custom authentication. The client-side code is still up to you. (I hope the author of the p...
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ruby system command check exit code

... check their exit codes simultaneously so that my script exits out if that command fails. 5 Answers ...
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Display open transactions in MySQL

I did some queries without a commit. Then the application was stopped. 4 Answers 4 ...
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Rails: What's a good way to validate links (URLs)?

...to do. A regular expression can validate the format of the URL. But even a complex regular expression cannot ensure you are dealing with a valid URL. For instance, if you take a simple regular expression, it will probably reject the following host http://invalid##host.com but it will allow http://i...
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How to implement a unique index on two columns in rails

...which is still creating an array of strings. I am sure you know this, this comment is just so other readers don't relate this to rails incorrectly :) – Khaja Minhajuddin Feb 18 '13 at 10:19 ...